Two new species and two morphological variant taxa of sessile rotifers found during a survey of Thai rotifers are reported upon. Living specimens were collected and identified from twelve sampling sites. The specimens were photographed, and prepared for SEMs of dorsal plates and trophi. Two new species of genus are recognized. possesses a corona with a relatively shallow ventral sinus, and a dorsal plate without any projection, whereas carries a corona with a deep and wide ventral sinus, and a dorsal plate with nine projections. Two morphological variants of are discussed, which are designated as SH and LH on the basis of the length of the horns on their dorsal plates. Moreover, both a dichotomous key and a formula key are provide including all species known to date.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6177515 | PMC |
| http://dx.doi.org/10.3897/zookeys.787.28098 | DOI Listing |
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